公开(公告)号：EP2021315A1

公开(公告)日：2009-02-11

申请号：EP07761984.9

申请日：2007-05-08

申请人： Sabic Innovative Plastics IP B.V.

发明人： BUCKLEY, Paul William ,  DARDARIS, David Michael ,  MCCLOSKEY, Patrick Joseph

IPC分类号： C07C68/02 ,  C07C69/96 ,  C07C67/58 ,  C07C69/88 ,  C08G64/20 ,  C08G64/30 ,  C08G64/04

CPC分类号： C07C67/58 ,  B01J2219/00006 ,  C07C68/02 ,  C08G64/205 ,  C08G64/307 ,  C07C69/96 ,  C07C69/84

摘要： An improved method for the preparation of ester-substituted diaryl carbonates prepared by reacting phosgene with recycle streams of ester-substituted phenols from reaction processes using a tetraalkyl ammonium hydroxide catalyst, a tetraalkyl phosphonium hydroxide catalyst, or both, where at least one alkyl group of the tetraalkyl ammonium hydroxide or the tetraalkyl phosphonium hydroxide is a methyl group. The improvement includes the step of treating the recycle stream to reduce the concentration of a trialkyl amine, trialkyl phosphine, or both, if present, from the recycle stream prior to reacting it with phosgene to form the ester-substituted diaryl carbonate.